[Elecraft] BFO oscillator level

Marteinn Sverrisson tf3ma at raunvis.hi.is
Sun Mar 11 07:00:55 EST 2007


I did some measurements on the BFO output level on my K2 #2024.
On U11 pin 6, I measured LSB: 596mV RMS, USB: 727mV RMS, CW: 577mV RMS, using
the RF probe and a DVM.

There has always been some BFO leakage into the AGC circuit. When I
adjust the S-meter LOW for 1 led lit on LSB, two leds will lit up on
USB, (40m band), I suspect this is caused by some leakage from the BFO osc,
beeing a little more on USB than on LSB.

Is there a simple way to reduce (or equalize) the BFO osc level, say by half?
It would still be within specs (see page 11 Appendix E, on manual)
Best if the BFO level would not change when the BFO freq is changed.

73, de Matti
-- 
   Marteinn Sverrisson    TF3MA
          Langitangi 2    Internet: tf3ma [at] raunvis [dot] hi [dot] is
        270 Mosfellsbær   http://www.raunvis.hi.is/~tf3ma
               Iceland


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